Toolcraft to-5390541 cotter pins made of spring steel, delivered in a convenient set of 10 pieces. These precision-engineered split pins are made from high-quality spring steel, offering excellent mechanical properties and reliable performance in demanding applications. The spring steel construction ensures superior elasticity and fatigue resistance, allowing the pins to maintain their holding power even under vibration and dynamic load conditions. With a diameter designed for secure fastening in standardized hole sizes, these split pins enable quick assembly without the need for special tools. The split design allows for easy insertion and creates a firm, vibration-resistant connection when compressed in the hole. Ideal for use in mechanical engineering, automotive applications, industrial facilities, and mechanical engineering projects that require reliable, reusable fastening solutions. The spring steel material provides good corrosion resistance and retains its spring properties over a wide temperature range from -20 °C to +120 °C. Each pin features precise dimensional tolerances for consistent performance and reliable fit. The set of 10 pieces offers a sufficient quantity for multiple assembly projects or replacement needs. These split pins are suitable for both permanent and temporary connections, providing the flexibility to disassemble and reassemble components as needed. The Toolcraft brand stands for high-quality German engineering standards with a focus on durability and precision manufacturing. The cotter pins are securely packaged to prevent damage during storage and transport, arriving in perfect condition, ready for immediate use in professional workshops, manufacturing facilities, or DIY projects that require reliable mechanical fasteners.